Stormwater - Residential Landscaping

Gardening at home.Yard and gardening wastes are among the many common stormwater pollutants that can degrade water quality. Stormwater runoff from vehicle maintenance / repair wastes has been found to contain high concentrations of metals, organics, oil and grease. When these wastes wash into our waters they can kill aquatic organisms. Metals such as chromium, cadmium, lead, and zinc have the potential to contaminate drinking water supplies as well as bioaccumulate in aquatic life. Organics such as engine degreasers, cleaners, and other solvents can also degrade water qualityStormwater runoff from yard maintenance has been found to contain high concentrations of organic wastes, fertilizers, pesticides, and soil that can leave your property. When these materials wash into local waters they poison fish and contaminate the water. Grass clippings, leaves, and tree trimmings swept or blown into streets and gutters carry chemicals into our waterways and can clog the storm drain system, increasing the risk of flooding. Once they settle into water bodies, these materials begin to decompose, absorbing oxygen fish need to survive. Soil and dirt washed from yards can also harm aquatic life by clogging the gills of fish, blocking light transmission, lowering water temperatures, and inhibiting photosynthesis.

Your Regulatory Requirements - County of San Diego, Stormwater Ordinance

What can I do?
Use Best Management Practices (BMPs)! 
BMPs are techniques or controls used to prevent or reduce the discharge of pollutants, such as fertilizers and pesticides, into the stormwater conveyance system also known as the storm drain system.
Integrated Pest Management or (IPM) is an excellent way to handle unwanted insects in you garden.

Helpful Information and Documents:
General Stormwater BMP Brochure
Residential Landscaping, Gardening, & Pest Control Infomation Website
Pollutant Impacts on Water Quality
San Diego County Wastewater Agencies
CASQA BMP Handbooks

Tip: Use less-toxic alternatives.

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If you have questions or would like additional information, 
call the County Stormwater hotline at 1(888) 846-0800
or e-mail us at

Report a Stormwater Violation On-Line
Department of Public Works
Watershed Protection Program
5510 Overland Ave., Suite 410, MS O326
San Diego,  CA  92123,  USA
(858) 495-5318           Fax: (858) 495-5263